package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetMealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * ClassName: DishServiceImpl
 * Description:
 *
 * @Author HTAO
 * @Create 2023/11/1 22:10
 */
@Slf4j
@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    DishFlavorMapper dishFlavorMapper;

    @Autowired
    SetMealDishMapper setMealDishMapper;



    @Transactional
    public void save(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);
        Long id = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null&& flavors.size()>0){
            for (DishFlavor flavor : flavors) {
                flavor.setDishId(id);
            }
            dishFlavorMapper.insertBatch(flavors);
        }

    }

    @Override
    public PageResult dishPageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.selectpage(dishPageQueryDTO);
        long total = page.getTotal();
        List<DishVO> records = page.getResult();
        return new PageResult(total,records);
    }

    @Override
    public void DeleteBatch(List<Long> ids) {
        //查菜品表是否还在售
        for (Long id :
                ids) {
            Dish dish = dishMapper.selectById(id);
            if(dish!=null){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //查菜品是否和套餐相关联
        List<Long> smids = setMealDishMapper.selectByDishIds(ids);
        if(smids!=null&&smids.size()>0){throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);}
        //进行删除菜品和口味
        for (Long id :
                ids) {
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);
        }
    }

    @Override
    public DishVO selectById(Long id) {
        Dish dish = dishMapper.selectByOnlyId(id);
        List<DishFlavor> dishFlavor = dishFlavorMapper.selectByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavor);
        return dishVO;
    }

    @Override
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        dishFlavorMapper.deleteByDishId(dishDTO.getId());
        dishFlavorMapper.insertBatch(dishDTO.getFlavors());
    }

    @Override
    public List<Dish> selectList(Long categoryId) {
        List<Dish> list = dishMapper.selectByCateforyId(categoryId);
        return list;
    }

    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.selectByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

}
